scsi: mpt3sas: switch to generic DMA API

Switch from the legacy PCI DMA API to the generic DMA API.

Also simplify setting the DMA mask a bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

3 files changed, 61 insertions, 58 deletions

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 166b607690a1..2500377d0723 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2259,7 +2259,7 @@ _base_build_sg_scmd(struct MPT3SAS_ADAPTER *ioc,
 	sges_left = scsi_dma_map(scmd);
 	if (sges_left < 0) {
 		sdev_printk(KERN_ERR, scmd->device,
-		 "pci_map_sg failed: request for %d bytes!\n",
+		 "scsi_dma_map failed: request for %d bytes!\n",
 		 scsi_bufflen(scmd));
 		return -ENOMEM;
 	}
@@ -2407,7 +2407,7 @@ _base_build_sg_scmd_ieee(struct MPT3SAS_ADAPTER *ioc,
 	sges_left = scsi_dma_map(scmd);
 	if (sges_left < 0) {
 		sdev_printk(KERN_ERR, scmd->device,
-			"pci_map_sg failed: request for %d bytes!\n",
+			"scsi_dma_map failed: request for %d bytes!\n",
 			scsi_bufflen(scmd));
 		return -ENOMEM;
 	}
@@ -2552,39 +2552,37 @@ _base_build_sg_ieee(struct MPT3SAS_ADAPTER *ioc, void *psge,
 static int
 _base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
 {
+	u64 required_mask, coherent_mask;
 	struct sysinfo s;
-	u64 consistent_dma_mask;
 
 	if (ioc->is_mcpu_endpoint)
 		goto try_32bit;
 
+	required_mask = dma_get_required_mask(&pdev->dev);
+	if (sizeof(dma_addr_t) == 4 || required_mask == 32)
+		goto try_32bit;
+
 	if (ioc->dma_mask)
-		consistent_dma_mask = DMA_BIT_MASK(64);
+		coherent_mask = DMA_BIT_MASK(64);
 	else
-		consistent_dma_mask = DMA_BIT_MASK(32);
-
-	if (sizeof(dma_addr_t) > 4) {
-		const uint64_t required_mask =
-		    dma_get_required_mask(&pdev->dev);
-		if ((required_mask > DMA_BIT_MASK(32)) &&
-		    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
-		    !pci_set_consistent_dma_mask(pdev, consistent_dma_mask)) {
-			ioc->base_add_sg_single = &_base_add_sg_single_64;
-			ioc->sge_size = sizeof(Mpi2SGESimple64_t);
-			ioc->dma_mask = 64;
-			goto out;
-		}
-	}
+		coherent_mask = DMA_BIT_MASK(32);
+
+	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) ||
+	    dma_set_coherent_mask(&pdev->dev, coherent_mask))
+		goto try_32bit;
+
+	ioc->base_add_sg_single = &_base_add_sg_single_64;
+	ioc->sge_size = sizeof(Mpi2SGESimple64_t);
+	ioc->dma_mask = 64;
+	goto out;
 
  try_32bit:
-	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
-	    && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
-		ioc->base_add_sg_single = &_base_add_sg_single_32;
-		ioc->sge_size = sizeof(Mpi2SGESimple32_t);
-		ioc->dma_mask = 32;
-	} else
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
 		return -ENODEV;
 
+	ioc->base_add_sg_single = &_base_add_sg_single_32;
+	ioc->sge_size = sizeof(Mpi2SGESimple32_t);
+	ioc->dma_mask = 32;
  out:
 	si_meminfo(&s);
 	ioc_info(ioc, "%d BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n",
@@ -3777,8 +3775,8 @@ _base_display_fwpkg_version(struct MPT3SAS_ADAPTER *ioc)
 	}
 
 	data_length = sizeof(Mpi2FWImageHeader_t);
-	fwpkg_data = pci_alloc_consistent(ioc->pdev, data_length,
-			&fwpkg_data_dma);
+	fwpkg_data = dma_alloc_coherent(&ioc->pdev->dev, data_length,
+			&fwpkg_data_dma, GFP_KERNEL);
 	if (!fwpkg_data) {
 		ioc_err(ioc, "failure at %s:%d/%s()!\n",
 			__FILE__, __LINE__, __func__);
@@ -3837,7 +3835,7 @@ _base_display_fwpkg_version(struct MPT3SAS_ADAPTER *ioc)
 	ioc->base_cmds.status = MPT3_CMD_NOT_USED;
 out:
 	if (fwpkg_data)
-		pci_free_consistent(ioc->pdev, data_length, fwpkg_data,
+		dma_free_coherent(&ioc->pdev->dev, data_length, fwpkg_data,
 				fwpkg_data_dma);
 	return r;
 }
@@ -4146,7 +4144,7 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
 	dexitprintk(ioc, ioc_info(ioc, "%s\n", __func__));
 
 	if (ioc->request) {
-		pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
+		dma_free_coherent(&ioc->pdev->dev, ioc->request_dma_sz,
 		    ioc->request,  ioc->request_dma);
 		dexitprintk(ioc,
 			    ioc_info(ioc, "request_pool(0x%p): free\n",
@@ -4223,7 +4221,7 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
 		dexitprintk(ioc,
 			    ioc_info(ioc, "config_page(0x%p): free\n",
 				     ioc->config_page));
-		pci_free_consistent(ioc->pdev, ioc->config_page_sz,
+		dma_free_coherent(&ioc->pdev->dev, ioc->config_page_sz,
 		    ioc->config_page, ioc->config_page_dma);
 	}
 
@@ -4514,9 +4512,10 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc)
 	sz += (ioc->internal_depth * ioc->request_sz);
 
 	ioc->request_dma_sz = sz;
-	ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
+	ioc->request = dma_alloc_coherent(&ioc->pdev->dev, sz,
+			&ioc->request_dma, GFP_KERNEL);
 	if (!ioc->request) {
-		ioc_err(ioc, "request pool: pci_alloc_consistent failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kB)\n",
+		ioc_err(ioc, "request pool: dma_alloc_coherent failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kB)\n",
 			ioc->hba_queue_depth, ioc->chains_needed_per_io,
 			ioc->request_sz, sz / 1024);
 		if (ioc->scsiio_depth < MPT3SAS_SAS_QUEUE_DEPTH)
@@ -4528,7 +4527,7 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc)
 	}
 
 	if (retry_sz)
-		ioc_err(ioc, "request pool: pci_alloc_consistent succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kb)\n",
+		ioc_err(ioc, "request pool: dma_alloc_coherent succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), total(%d kb)\n",
 			ioc->hba_queue_depth, ioc->chains_needed_per_io,
 			ioc->request_sz, sz / 1024);
 
@@ -4816,8 +4815,8 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc)
 		}
 	}
 	ioc->config_page_sz = 512;
-	ioc->config_page = pci_alloc_consistent(ioc->pdev,
-	    ioc->config_page_sz, &ioc->config_page_dma);
+	ioc->config_page = dma_alloc_coherent(&ioc->pdev->dev,
+			ioc->config_page_sz, &ioc->config_page_dma, GFP_KERNEL);
 	if (!ioc->config_page) {
 		ioc_err(ioc, "config page: dma_pool_alloc failed\n");
 		goto out;
diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
index 0f6305c30554..4afa597cbfba 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -744,8 +744,8 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 
 	/* obtain dma-able memory for data transfer */
 	if (data_out_sz) /* WRITE */ {
-		data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
-		    &data_out_dma);
+		data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz,
+				&data_out_dma, GFP_KERNEL);
 		if (!data_out) {
 			pr_err("failure at %s:%d/%s()!\n", __FILE__,
 			    __LINE__, __func__);
@@ -764,8 +764,8 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 	}
 
 	if (data_in_sz) /* READ */ {
-		data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
-		    &data_in_dma);
+		data_in = dma_alloc_coherent(&ioc->pdev->dev, data_in_sz,
+				&data_in_dma, GFP_KERNEL);
 		if (!data_in) {
 			pr_err("failure at %s:%d/%s()!\n", __FILE__,
 			    __LINE__, __func__);
@@ -1083,11 +1083,11 @@ _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
 
 	/* free memory associated with sg buffers */
 	if (data_in)
-		pci_free_consistent(ioc->pdev, data_in_sz, data_in,
+		dma_free_coherent(&ioc->pdev->dev, data_in_sz, data_in,
 		    data_in_dma);
 
 	if (data_out)
-		pci_free_consistent(ioc->pdev, data_out_sz, data_out,
+		dma_free_coherent(&ioc->pdev->dev, data_out_sz, data_out,
 		    data_out_dma);
 
 	kfree(mpi_request);
@@ -1549,9 +1549,9 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
 	if (request_data) {
 		request_data_dma = ioc->diag_buffer_dma[buffer_type];
 		if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
-			pci_free_consistent(ioc->pdev,
-			    ioc->diag_buffer_sz[buffer_type],
-			    request_data, request_data_dma);
+			dma_free_coherent(&ioc->pdev->dev,
+					ioc->diag_buffer_sz[buffer_type],
+					request_data, request_data_dma);
 			request_data = NULL;
 		}
 	}
@@ -1559,8 +1559,8 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
 	if (request_data == NULL) {
 		ioc->diag_buffer_sz[buffer_type] = 0;
 		ioc->diag_buffer_dma[buffer_type] = 0;
-		request_data = pci_alloc_consistent(
-			ioc->pdev, request_data_sz, &request_data_dma);
+		request_data = dma_alloc_coherent(&ioc->pdev->dev,
+				request_data_sz, &request_data_dma, GFP_KERNEL);
 		if (request_data == NULL) {
 			ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n",
 				__func__, request_data_sz);
@@ -1631,7 +1631,7 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
  out:
 
 	if (rc && request_data)
-		pci_free_consistent(ioc->pdev, request_data_sz,
+		dma_free_coherent(&ioc->pdev->dev, request_data_sz,
 		    request_data, request_data_dma);
 
 	ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
@@ -1768,8 +1768,8 @@ _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
 
 	request_data_sz = ioc->diag_buffer_sz[buffer_type];
 	request_data_dma = ioc->diag_buffer_dma[buffer_type];
-	pci_free_consistent(ioc->pdev, request_data_sz,
-	    request_data, request_data_dma);
+	dma_free_coherent(&ioc->pdev->dev, request_data_sz,
+			request_data, request_data_dma);
 	ioc->diag_buffer[buffer_type] = NULL;
 	ioc->diag_buffer_status[buffer_type] = 0;
 	return 0;
@@ -3581,8 +3581,10 @@ mpt3sas_ctl_exit(ushort hbas_to_enumerate)
 			if ((ioc->diag_buffer_status[i] &
 			    MPT3_DIAG_BUFFER_IS_RELEASED))
 				continue;
-			pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
-			ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
+			dma_free_coherent(&ioc->pdev->dev,
+					  ioc->diag_buffer_sz[i],
+					  ioc->diag_buffer[i],
+					  ioc->diag_buffer_dma[i]);
 			ioc->diag_buffer[i] = NULL;
 			ioc->diag_buffer_status[i] = 0;
 		}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 031b420f4d40..6a8a3c09b4b1 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -350,9 +350,8 @@ _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
 
 	data_out_sz = sizeof(struct rep_manu_request);
 	data_in_sz = sizeof(struct rep_manu_reply);
-	data_out = pci_alloc_consistent(ioc->pdev, data_out_sz + data_in_sz,
-	    &data_out_dma);
-
+	data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
+			&data_out_dma, GFP_KERNEL);
 	if (!data_out) {
 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
 		    __LINE__, __func__);
@@ -437,7 +436,7 @@ _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
  out:
 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
 	if (data_out)
-		pci_free_consistent(ioc->pdev, data_out_sz + data_in_sz,
+		dma_free_coherent(&ioc->pdev->dev, data_out_sz + data_in_sz,
 		    data_out, data_out_dma);
 
 	mutex_unlock(&ioc->transport_cmds.mutex);
@@ -1128,7 +1127,8 @@ _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
 
 	sz = sizeof(struct phy_error_log_request) +
 	    sizeof(struct phy_error_log_reply);
-	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
+	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
+			GFP_KERNEL);
 	if (!data_out) {
 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
 		    __LINE__, __func__);
@@ -1218,7 +1218,7 @@ _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
  out:
 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
 	if (data_out)
-		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
+		dma_free_coherent(&ioc->pdev->dev, sz, data_out, data_out_dma);
 
 	mutex_unlock(&ioc->transport_cmds.mutex);
 	return rc;
@@ -1432,7 +1432,8 @@ _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
 
 	sz = sizeof(struct phy_control_request) +
 	    sizeof(struct phy_control_reply);
-	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
+	data_out = dma_alloc_coherent(&ioc->pdev->dev, sz, &data_out_dma,
+			GFP_KERNEL);
 	if (!data_out) {
 		pr_err("failure at %s:%d/%s()!\n", __FILE__,
 		    __LINE__, __func__);
@@ -1519,7 +1520,8 @@ _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
  out:
 	ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
 	if (data_out)
-		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
+		dma_free_coherent(&ioc->pdev->dev, sz, data_out,
+				data_out_dma);
 
 	mutex_unlock(&ioc->transport_cmds.mutex);
 	return rc;